[hm] Fix overflow in adcToFeedvolt displaying incorrect fan voltage
[hm] Fix overflow in adcToFeedvolt displaying incorrect fan voltage

haha 90 * 33 * 255 = 757350, come on Bryan.
This can be changed to return ((R1 + R2) * 33U / R1) * adc / 255U;
Since R1 + R2 * 33 / R1 = a whole number but the size is the same
so let's just leave it working for the generic case

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